1991 Ford Sierra vs. 2005 Opel Vectra
To start off, 2005 Opel Vectra is newer by 14 year(s). Which means there will be less support and parts availability for 1991 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1991 Ford Sierra would be higher. At 2,171 cc (4 cylinders), 2005 Opel Vectra is equipped with a bigger engine. In terms of performance, 2005 Opel Vectra (124 HP @ 3250 RPM) has 49 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM) In normal driving conditions, 2005 Opel Vectra should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Vectra weights approximately 415 kg more than 1991 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Opel Vectra (280 Nm @ 1500 RPM) has 128 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2005 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1991 Ford Sierra | 2005 Opel Vectra | |
| Make | Ford | Opel |
| Model | Sierra | Vectra |
| Year Released | 1991 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 2171 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 124 HP |
| Engine RPM | 4500 RPM | 3250 RPM |
| Torque | 152 Nm | 280 Nm |
| Torque RPM | 2200 RPM | 1500 RPM |
| Engine Bore Size | 82.5 mm | 84 mm |
| Engine Stroke Size | 82 mm | 98 mm |
| Engine Compression Ratio | 21.5:1 | 18.5:1 |
| Fuel Type | Diesel | Diesel |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1145 kg | 1560 kg |
| Vehicle Length | 4430 mm | 4830 mm |
| Vehicle Width | 1700 mm | 1800 mm |
| Vehicle Height | 1370 mm | 1510 mm |
| Wheelbase Size | 2620 mm | 2840 mm |
| Fuel Tank Capacity | 60 L | 60 L |
